JavaScript
Anil-matcha/awesome-open-source-saas-alternatives
Open source alternatives to paid SaaS apps: Notion, Slack, Auth0, Vercel and more. Curated list with licenses and GitHub stars.
★ 3.5k
Stars
519 forks · 35 open issues
+2.6/day
Growth · measured
Stars counted between two of our own snapshots roughly a week apart. The repository page gives the exact span.
35.8
Momentum / 100
see the breakdown below
2y ago
Created
last push 3d ago
Star history
How this score was built
| Component | Weight | Earned | Why |
|---|---|---|---|
| Velocity | 55 | 10.6 | +2.6/day, log-scaled against a 750/day ceiling |
| Acceleration | 15 | 0.0 | last week ran 1.00× the monthly pace |
| Freshness | 15 | 14.9 | last push 3d ago; decays to zero at 180 days |
| Scale | 15 | 10.3 | 3.5k stars, log-scaled against 150k — stops a 3-star repo topping the board |
| Momentum | 100 | 35.8 | sum of the above |
Detail
| Topics | alternativesauth0-alternativeawesomeawesome-listfigma-alternativefirebase-alternativefree-softwarenotion-alternativeopen-sourceopen-source-alternativesopen-source-softwarepostman-alternativeprivacysaassaas-alternativesself-hostedselfhostedslack-alternativevercel-alternativezapier-alternative |
| Matched on | SaaS (saas) |
| Short window | +18 stars over 7 days = 2.6/day |
| Long window | +59 stars over 23 days = 2.6/day |
| Lifetime average | 3.17 stars/day over 1,091 days |
| First seen here | 2026-10-13 |
| Last read | 2d ago |